holley up grade??
Thread Starter
Joined: Feb 2008
Posts: 504
Likes: 1
From: newfoundland canada
Car: 1989 camaro rs
Engine: ls 5.3 carb
Transmission: t56 six speed
Axle/Gears: 3:73
holley up grade??
Hey can a holley 600-650 cfm be upgraded to a 750cfm? i was wondering if you could by a kit to do that sort of thing, thanks
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: holley up grade??
Which Holley is it? With the double pumpers, as far as i know the only difference between the 650 and the 750 is the mainbody. Those can be had individually if you already have a 650 or 750 DP carb laying around... The nice mainbodies arent really cheap, though. Not sure it's really worth the trouble to do all that, but you can do it.
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Right, the 650 to 750 all use the same throttle body, so a replacement main body will upgrade it. But, I believe the 600s use a different throttle body.
Thread Starter
Joined: Feb 2008
Posts: 504
Likes: 1
From: newfoundland canada
Car: 1989 camaro rs
Engine: ls 5.3 carb
Transmission: t56 six speed
Axle/Gears: 3:73
Re: holley up grade??
cool that sounds good, I think your right though about just replacing it for a new one, but I didnt know for sure, so thought all the tallent on here that someone would know how it worked, thanks
Last edited by camarozz383; Feb 14, 2012 at 06:39 PM.
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